Locomotive draft appliance



Nwv. 4 1924.

JUN GLOVEFE FERGUSON -LOCOMOTI VE DRAFT APPLIANCE Filed June 13 1924 2- $hwaas-3hi 1 I sparks;

voaemyeat a wsoa, or srin-rivnroar, LOUISIANA.

moor/terms DRAET nrrnmncnz .Applicationfiled June 13,1924. Serial No. 719588.

10 all whom it may concern:

Be it known that I,'VoN Gnovi znl niienf soN,

a citizen of the United States, .re'sid ing at Shreveport, in theparish of Oaddo and State of Louisiana, have inventedeertain new anduseful Improvements in Loco-- motive Draft Appliances, of which the following is a specification.

The present means for creatinga forced draft in locomotives and to prevent the emission of The object of'the invention is to provide simplicity in construction, to reduce the number of parts generally required and to generally improve upon similar structures especially such as are disclosed in Letters Patent No. 1,364,089 issued to me on January 4,1921.

lVith the above and numerous other objects in view as will appear as the description progresses, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 represents a sectional view of the end of a locomotive taken through the smoke chamber with this improved device shown applied.

Figures 2 and 3 are detail horizontal sections taken substantially on the lines 2-2 and 3-3 respectively of Figure 1,

Figure a is a vertical longitudinal section through the appliance, and

Figures 5 and 6 are horizontal transverse sections taken substantially on the lines 5-5 and 6-6 respectively of Figure 1.

Referring to the drawing in detail it will be seen that a locomotive boiler A of the ordinary construction is provided at one end with the usual smoke chamber B with which connects the smoke stack C and an exhaust nozzle D. These parts may be of any well known construction and are illustratedsimply to demonstrate the application of the present invention.

A stand pipe 1 is located in the smoke chamber B andis connected at its lower end by means of plate 2 with the exhaust nozzle D. This stand pipe 1 is .in line-with the smoke stack C and is centered bymeans of a cylindrical hood 3 into the bottom end of which the upper portion of the stand; pipe extends for a short distance as is indicated invention appertains to apertures 5 in the bottom 4: of

toadvantage inFigure 4:. 'lhe st and pipe 1 extends through the bottom 4' of. the cylindrical hood said bottom being provided .with a'series; of openings 5. The hood 3 is connectedwith the smoke stack or a part of the locomotive boiler in any suitable manner, a plate 6 being fixed to the inside of boiler A to register the hood with the stack. This hood 3 is provided iiiith a plurality 0t, apertures 7 adjacent its upperlendfandiwith several annular series of apertures 38,,ar-

ranged in groups 9 adj acentits lower .ehqdL A plurality of openings 10 are provided in the stand pipe 1. A'collar ll-isprovided, on the exterior. of the stand. pipe: immediately above the lowermost apertures jtherein; A'closure cylinder 12 is disposed about the stand pipe resting on the collar 11 and ,pro vided with apertures 13 which may be brought in registry with apertures 10 above the collar 11. The apertures 11 below the collar are open'at all-times and allow the escape of smoke when the closure cylinder is rotated so that its apertures 13 are out of registry with the remaining aperture 10.

A closure cylinder 15 is disposed about the hood 3 for closing the roups 9 or" openings 8, a plurality o1 openings 16 being provided therein which may be brought into registry with the groups 9. This cylinder 15 is provided with a bottom 1'? having therein apertures 18 for registering with the me hood. This bottom 17 rests on a sleeve 19 disposed about the stand pipe and held in place by means of a set screw 20. Lugs 21 extend from the hood through slots 22 thus limiting the movement oi the cylinder 1-5 when rotated. "When the lugs are at one extremity of the slots the openings 16 register with thegroups 9 of openings 8 and when at the other extremities the openings 16 are not registered with the groups 9 of openings 8. A lug 25 extends from the bottom end of the cylinder 15 and a link 26 is pivotally connected therewith. This link extends through the wall of the boiler construction and is pivoted to one end of a bell crank lever 27 which is pivoted on a suitable bracket 28. a

A plate 29 is formed integral with cylin-- der 12 and a link 30 is pivoted thereto extending through the boiler const uctionand 27 'and 31 it will be seer-1 thatthe closure Wt point out that changes in the details, and

in the combination and arrangement of parts may be resorted to Without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, What I claim as new is: w

1. The combination With a locomotive boiler provided with an'end smoke chamber,

I exhaust nozzle and smoke stack in cooperatlve relation w th the smoke chamber, a

stand pipe connected with the exhaust nozale and having its upper end disposed in discharge alinement with the smoke stack, of a hood connected to the smoke stack, said stand pipe extending into said hood, said stand pipe and said hood provided with openings, cylindrical closures rotatably mounted about said stand pipe and said hood, said closure provided with apertures, and means for rotating the closures to bring their apertures in registry with the openings or to move them out of registry with the openings of the stand pipe or the hood.

2. A device of the class described includ-v ing a stand pipe having a series of openings therein, a cylindrical closure rotatable about the stand pipe and provided With apertures which may be registered with of the stand pipe, collar on the stand pipe, a hood into which said stand pipe extends at its upper end, a second cylindrical closure rotatable on the hood and resting on the collar, said hood provided with a' plurality of openings,-said second closure provided with a plurality of apertures adapted to be brought in registry with the openings of the hood, and means for rotating the closure.

In testimony whereof I ailix my signature in presence of two Witnesses.

VON GLOVER FERGUSON. Witnesses:

A. D. KING,

F. F. FERGUSON.

the openings 

